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Northern watermilfoil is often mistaken for coontail or Eurasian watermilfoil. A large difference is it does not branch at the surface as much as Eurasian watermilfoil does. The northern variety typically has half as many leaflet pairs as Eurasian has. The leaves of the northern are rigid when removed from the water, but Eurasian leaves are limp when out of water. The northern species also forms winter buds (groups of small, dark, brittle leaves) in late fall and winter. |
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